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NSN 5306-00-127-3170

Close Tolerance Hex Head Bolt

About this product

Between 5.672 inches and 5.702 inches fastener length, dished hexagon head style, between 0.156 inches and 0.171 inches head height, width between flats: between 0.492 inches and 0.502 inches .

Manufacturer part number 134CM50008-1 for national stock number 5306001273170.

Datasheet

  • Product description

    Close Tolerance Bolt NSN 5306-00-127-3170.

  • MPN or Model

    134CM50008-1

  • Schedule B
    7318.15.2000 (Bolts and bolts and their nuts or washers exported in the same shipment)
  • NMF (National Motor Freight)
    093486 - Bolts, Nuts Or Screws, NOI (sub 3)
  • Thread Class
    3a
  • Thread Direction
    Right-hand
  • Thread Length
    Between 0.350 inches and 0.400 inches
  • Fastener Length
    Between 5.672 inches and 5.702 inches
  • Head Style
    Dished hexagon
  • Head Height
    Between 0.156 inches and 0.171 inches
  • Width Between Flats
    Between 0.492 inches and 0.502 inches
  • Grip Diameter
    Between 0.3108 inches and 0.3118 inches
  • Shank Unthreaded Hole Diameter
    0.076 inches first hole and 0.086 inches first hole
  • Thread Diameter
    0.312 inches
  • Grip Length
    Between 5.302 inches and 5.322 inches
  • Thready Qty Per Inch (tpi)
    24
  • Distance From Head Largest Bearing Surface To Shank Hole Center
    5.543 inches first hole and 5.593 inches first hole
  • Material
    Steel comp 4140 or steel comp e4340 or steel comp 6150 or steel comp 8735 or steel comp 8740
  • Material Specification
    Mil-s-5626 military specification 1st material response or mil-s-5000 military specification 2nd material response or mil-s-8503 military specification 3rd material response or mil-s-6098 military specification 4th material response or mil-s-6049 military specification 5th material response
  • Surface Treatment
    Chromium grip
  • Surface Treatment Specification
    8.250m, cl 2, fscm 26512 mfr ref single treatment response
  • Thread Series Designator
    Unf
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Close Tolerance Bolt

An externally threaded fastener whose unthreaded portion is of a specified grip length, plated or unplated, and is machined to a tolerance of one thousandth (0.001) of an inch (0.025 mm) or less of a specific diameter for items one inch (25 mm) or less in diameter. Items over one inch (25 mm) in diameter shall have a tolerance of fifteen ten-thousandths (0.0015) of an inch (0.038 mm) or less. The nominal major diameter of the threads shall be at least one thousandth (0.001) of an inch (0.025 mm) below the minimum shank diameter, but not below the minimum major diameter for applicable class of fit, as shown in the screw thread standards, fed std h28 and/or other nationally recognized standards. The head is not designed to be held or driven with an inserted driver, nor is it designed for rotation by the thumb and fingers. A locking feature may be incorporated in the design of the head or threads. For items having close tolerance, and fabricated from material having 160,000 pounds per square inch (1100 megapascals) minimum tensile strength, see bolt, shear. For items fabricated from material having less than 160,000 pounds per square inch (1100 megapascals) minimum tensile strength and not having a close tolerance, see bolt, machine.

Mechanic Bill explains Close Tolerance Hex Head Bolt

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NSN 5306001273170

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
134CM50008-1 Northrop Grumman Systems Corporation
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